Filinov Retreat Reviews

Hello, I'm interested in going to one of the Filinov Retreats in Montenegro. The only problem is that besides their youtube channel, I can't find experiences or reviews of people who've done the retreat ***AFTER*** they've done it. All the videos on the youtube channel are from people *during* the retreat. I'd really like to ask people if they'd still recommend the retreat 6 months or a year afterwards. Anyone know of anywhere where you can see these reviews instead of these people who are making these videos during the retreat?

It's also possible that they make videos with a lot of people and only upload the ones that are giving the most positive feedback. I'd love to be more informed before shelling out the money to go to the retreat.